I use Samsung Cloud every day. I copy to Samsung Cloud Drive photos, documents, screenshots, music files, Samsung Notes and all sorts of other stuff.
I also use other synced data to sync contacts, calendar, Samsung Notes, Samsung pass and Samsung internet. It's really a good way backup your important data especially with Samsung cloud drive. I also do a full backup once in a while.
I also use Google drive for saving images, documents etc.
I think you should take a look at it and decide if want to use it or not before it's removed. System settings /Accounts and backup/Samsung cloud.